The way you should have the deck posted is under the first spoiler. Makes it easier for people to copy so they can change cards and make changes easier.
As for the death cards: Honestly, i have not been a big fan of dark/death decks. However, bonewalls could make for great defense, especially with parasites backing. Plague could also be a consideration with that route. On the other hand, a good dusk mantle can turn the game rather easily.
You could also try liquid shadow for its lobo effect. Poison and skull shield could also be worked in.
FYI: Keeping a deck at 30-35 maximizes draw chance.